Year % of GDP 1991 35.509967994575845 1992 35.4939433217562 1993 34.04313439893832 1994 36.57679887229559 1995 50.23457380235028 1996 49.52903590887304 1997 46.52706862433733 1998 46.384800147059565 1999 48.48965517346514 2000 47.40521435958789 2001 43.941360797211324 2002 41.78972533521102 2003 40.46317687151165 2004 40.12522229021697 2005 38.201650227062 2006 36.26410029102571 2007 36.71189428158749 2008 38.00845792512741 2009 40.34871250378675 2010 41.32917278486019 2011 42.230360934467434 2012 40.4179253085238 2013 40.56790274682399 2014 42.305867826100425 2015 41.663622463302616 2016 40.162225264204544 2017 39.13739931861573 2018 38.587805822427164 2019 38.545158844537475 2020 45.340138190543186 2021 41.32869823411488 2022 38.34822417917519